Solar Loading

Definition - What does Solar Loading mean?

This is the temperature at which a thermal stress effect will be felt in structural and non-structural members due to solar radiation. This effect is observed due to the change in radiation or temperature and controlled by the total coefficient of heat transfer and the solar absorptivity. It used to determine the internal enclosure temperature and the efficiency of solar shields and insulations.

Corrosionpedia explains Solar Loading

Depending on the orientation of buildings and structures, the members are exposed to solar radiation, which can be incident on the substrate surface. The radiation based on time and environmental condition results in the creation of solar loading effects. The heat flux affects the orientation of the grain in the material and thus residual stresses might occur.

The presence of the irradiance change will result in the temperature change that from time to time affects the balancing of the initial temperature of a material. The absorption and reflection of solar radiation also affects the outside temperature that also determines the thermal state of a material.

Different months and periods of the year have varying amounts of solar radiation that falls on the earth based on the absorption that has occurred before the appearing incident on a substrate. Hence, the latitudes have different thermal effects. The solar loading can also be influenced by the surface finish (texture and color). The absorption value of a surface will increase with age, therefore solar shielding is required to reduce the effect of solar loading.

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